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Notice on the Use of Generative AI in inZOI

Hello, Creators.


Recently, there has been growing interest and various discussions in the community regarding the use of generative AI technologies used in inZOI. To provide clear and accurate information, we would like to share the following details.

[Text to Image (T2I) Technology]
The Text to Image (T2I) technology applied in inZOI was trained using publicly available images that are permitted for commercial use.
Over the course of several months, we built our own dataset by selecting 20 million images from public images released under Creative Commons licenses permitting commercial use and modification.
In this process, we referred to MOSAICML’s Common Canvas methodology and applied additional filtering standards to enhance reliability.
For model training we used open-source AI architectures licensed for commercial use.

[3D Printing AI Technology]
Our 3D printing AI technology was trained on approximately 46,000 high-quality 3D models either owned by us or sourced from datasets that are also permitted for commercial use.
This enables users to automatically generate blueprints for in-game 3D printing.

[Video-to-Motion Technology]
The Video-to-Motion(V2M) system was trained primarily on over 1.7 million motion data samples owned and collected by us supplemented with a limited number of publicly available datasets released under open licenses.
As a result, the V2M system enables characters to naturally perform human-like movements such as walking, greeting others, and dancing.

[Our Development Principles]
As we developed and applied generative AI technologies, we generally employed the following principles:
  • Use of open-source technologies licensed for commercial use
  • Use of carefully selected datasets permitted for commercial use
  • Operation of a robust reporting and review system to address any potential claims swiftly and responsibly


We wanted to share this for transparency, as part of our effort to deliver technologies that creators trust.


Thank you,
The inZOI Team

Kjun's Letter: Upcoming Updates

Hello, Creators.
Kjun here.


In this letter, I'll be sharing our plans for features currently in development, as well as the direction we want to take inZOI in the future.


Our team has spent the past month carefully reviewing and addressing frequently reported issues, including build stability, awkward emotional expressions, and a lack of depth in the Karma system. This experience has helped us once again realize how important convincing emotions and behavior is for a life simulation game. Thankfully, some players have responded positively to these fixes by expressing that emotions and conversations now feel more natural, which we truly appreciate. That said, there's still plenty of room for improvement, so we remain committed to making inZOI a better experience for players.


In addition to our ongoing hotfixes, we're actively working on the May and August updates. The May update will introduce long-awaited modding features to the game. While these features won't support creating entirely new systems from scratch at launch, they will allow you to modify key in-game data and settings. We're also preparing official plug-ins for Blender and Maya to make creating custom outfits and furniture easier, as well as features that allow players to work with various asset types such as textures, meshes, FX, and MetaSounds. Guidelines for creating assets will be shared via tutorial videos and the modding UI. We plan on continuing to expand modding support and aim to have all core features in place by December.


With a third city coming to the game, we're also exploring new challenges. We've recognized the community's desire for more gameplay depth and we will work towards offering content with the potential for richer storytelling and more engaging experiences. To match the vibe of the new city, we will be introducing smaller vehicles, such as motorcycles, along with highly requested vehicle personalization features. Since these will build upon our existing vehicle systems, some animations may seem slightly awkward at first. However, we believe that this will allow players to experience the thrill of weaving through the city on a smaller ride, enhancing both the storytelling and atmosphere aspects. We will continue to put our best effort into developing something that feels truly worthwhile.


While we made some adjustments to the Karma system in the previous hotfix, we will continue to refine and expand on it. To address the lack of meaningful consequences, we're currently planning new crime-related content that allows Zois to be caught and go to jail, spawning additional events as a result. Our goal is to create deeper gameplay experiences where Karma-based interactions lead to logical, connected outcomes. If you have any fun or creative ideas, let us know in the #inzoi-feedback channel on our Discord!


Finally, we've noticed growing interest and discussion within our community surrounding inZOI's use of AI. We will be addressing this topic in a separate announcement, and will continue to prioritize transparency and trust to allow players to continue enjoying inZOI.


While inZOI is far from perfect, we are working day and night to make it a true life simulation game through imagination, consideration, and experimentation. Every piece of feedback from each of our players helps point us in the right direction. We will continue listening closely to our community, so please don't hesitate to share your thoughts with us.


Last but not least, I'd like to express my heartfelt appreciation for your continued support.


Thank you.
- Kjun

inZOI ModKit Announcement and Modding Roadmap (Updated)

[p]Hello, Creators.

We're excited to announce that the long-awaited inZOI ModKit will be released in May 2025, along with the game's first modding update!

Please check the information below for more details on the ModKit as well as modding-related features planned for future updates.

[/p][h2]1. inZOI ModKit Release[/h2][p]
The inZOI ModKit is an official tool created to make modding inZOI simple and accessible for everyone. It will be available for download on the Epic Games Store after the May update, and will include the following features.

◆ Downloadable assets

- Mesh files (.fbx) and JSON data files for set outfits and furniture will be made available after the May update, and support for additional assets will be added in future updates.

- By editing JSON files used in the game, players will be able to freely adjust in-game states and conditions.

 - ex. Craft beds that fill the Sleep gauge in 5 minutes.

 - ex. Modify romantic conversations to make Zois feel Aflutter for 10 hours.

◆ Plug-ins for Maya and Blender

- Official plugins for Maya and Blender will be provided to make creating 3D assets for inZOI easier.

- These plugins will allow you to conveniently import downloaded mesh files for your projects.

◆ Modding with Unreal Engine

- Meshes or JSON files created using Maya or Blender can be imported with the ModKit to create modding projects in the form of Unreal Plugins.

◆ CurseForge compatibility

- Created mods can be uploaded to CurseForge for packaging.

- An in-game interface that allows Creators to search and download uploaded mods will be added in the future.

[/p][h2]2. Modding Roadmap[/h2][p]
To expand inZOI's modding ecosystem one step at a time, we've prepared a modding roadmap for 2025. We will build upon core features with each update while continuing to make improvements based on your feedback.[/p][p]
◆ May Update

The May update will introduce quality-of-life features related to modding, as well as a data editor to make editing game data easier. In addition to this, the inZOI ModKit will also be officially released.

◆ October Update[/p][p]The October update will introduce modding features for character appearances and buildings. Support for interaction-based mods will also be added, allowing players to create mods for scripted conversations, voices, rewards, and character animations.

◆ December Update

The December update will allow most outfits to be modded and introduce features for script editing and localization. We hope this will help create an environment where Creators can freely produce content with greater depth and variety.

[/p][h2]3. Other Information[/h2][p]
inZOI's Modifications Policy will be published on our official website in mid-May 2025. It will include key guidelines on creating and using mods, as well as important details on restrictions, ownership, and monetization for mods.

We will continue to listen to your feedback and work towards creating a better modding environment for inZOI. As part of this commitment, we will be hosting an Ask Me Anything (AMA) session focused on modding and opening a dedicated feedback channel. Further details will be announced in May via a separate post.

Please look forward to the future of modding in inZOI!

Thank you,
The inZOI Team
[/p]

[v0.1.7] Hotfix Details

Hello, Creators.

We would like to inform you that the following hotfix has been applied to inZOI. Please refer to the details below for more information.

◆ Hotfix Details

◽️ Patch Date: April 29th, 2025

◽️ Game Version: 20250428.2678.W

[hr][/hr]

[h3]Gameplay Update[/h3]

◽️ New Items Added to Character Customization & Build Mode

※ [inZOI Team’s Comment] To help Creators express their creativity and imagination even more vividly, we’ve prepared new updates for both Character Customization and Build Mode.

Enjoy expanding your stories with these fresh updates!

1) Character Customization Updates

 - Hair

  ㄴ 3 new short-length hairstyle options added

 - Clothing

  ㄴ 2 new basic tops / 1 new basic bottom / 3 types of socks by length / 9 new types of stockings added

 - Accessories

  ㄴ 4 new hats / 1 new pair of glasses / 5 new hair accessories added

 - Eyelashes

  ㄴ 2 new eyelash styles added



2) Build Elements Updates

 - Tile Textures for Build Customization

  ㄴ 25 new textures added to decorate walls, floors, roofs, and ceilings

 - Short Stairs

  ㄴ 4 types of short-length stairs added for more flexible building options

 - Doors and Windows

  ㄴ 13 new doors and 16 new windows in various sizes and styles added



◽️ New Update Banner Added to the Lobby

※ [inZOI Team’s Comment] A new banner has been added to help you easily view the newly added furniture, hairstyles, and more at a glance.

◽️ Slower Rate of Lot Pollution

※ [inZOI Team’s Comment] We have significantly slowed the rate at which lots become dirty. Although cleanliness is designed as an element Creators can manage themselves, the previous setting caused pollution to occur too frequently, disrupting the natural flow of gameplay.

With this patch, the pollution speed has been greatly eased, and we are also considering adding an option to disable lot cleanliness changes entirely in a future update.

◽️ Improved Sudden Emotional Stability for Zois

※ [inZOI Team’s Comment] Based on reports from Creators, we have addressed the issue where Zois' emotions would change too rapidly and unnaturally.

Now, the primary emotion will only change if the emotional score reaches 2 points or higher. Otherwise, the Zois' base emotion will remain stable.

As this adjustment might slow emotional changes slightly in some situations, we plan to introduce further improvements to ensure even more natural emotional transitions.

◽️ Adjusted hunger restoration from street food to prevent Zois from getting hungry too frequently.

[hr][/hr]

[h3]Bug Fixes[/h3]

[h3]Gameplay[/h3]

◽️ Fixed an issue where male Zois could not eat street food while seated.

◽️ Fixed an issue where the Tteokbokki-related urge could not be completed.

[h3]Character[/h3]

◽️ Fixed an issue where Zois' facial appearance set in 'Create a Zoi' appeared differently in-game.

[h3]Build Mode[/h3]

◽️ Fixed an issue where the original creator was not retained when applying a lot preset of a different size than the current property.

◽️ Fixed an issue where the default color and material would only apply to part of the stairs after rotating stairs and applying a stair wall.

[h3]Crash Fixes[/h3]

◽️ Fixed an issue where graphical glitches and intermittent freezes could occur during SceneDepthZ processing while playing.

[h3]Other Issues[/h3]

◽️ Fixed an issue where changes made in Game Options were automatically applied without clicking "Apply" in the confirmation popup.

◽️ Fixed an issue where save files could not be loaded if the file path contained certain special characters.


Finally, we've improved localization quality for several languages to ensure a more natural experience.

You can check the localization status for each language under [Options > Gameplay > Game Language].


We’ll continue working to make inZOI more stable and enjoyable for everyone.

Thank you, as always, for your continued support and valuable feedback.

The inZOI Team

Kjun's Letter: Looking Back on inZOI's Early Access Release

Hello, everyone! Kjun here.
Long time, no talk!

There's been so much I've wanted to share with you all since inZOI's Early Access release.

Today, I'd like to go over a few of those thoughts, as well as share how we plan to communicate with the community moving forward.

We released inZOI in Early Access so we could share it with you as soon as possible, however imperfect. Our goal has always been to shape the game together by using your feedback to create the best possible experience.

That's why continuing the connections and conversations that we have with all of you is just as important to us as developing the game itself. To honor that spirit of collaboration, we plan to communicate with our community more frequently and openly going forward.

As the first step forward, I'd like to share our future plans for communication.

[h2]Future Communication Plans[/h2]
[h3]"Kjun's Letter": Musings from myself and the inZOI Team[/h3]
Starting today, I'll be sharing my thoughts and reflections on the development of inZOI with you all. While the format will be similar to "Kjun's Concerns," I hope to go beyond just my concerns and also touch on more personal and in-depth topics. More importantly, I want to discuss the feedback, suggestions, and honest opinions we've received, as well as our future plans for the game, so stay tuned!

[h3]"Monthly Known Issues": Details on Known Issues[/h3]
We'll be sharing a list of known issues every month, and we'll continue to make improvements to the overall gameplay experience based on your feedback.

[h3]"inZOI @": Previews of New Content[/h3]
As mentioned during the March showcase, we have a variety of new content planned for future release. We'll be offering previews and live Q&A sessions before each release to give you a closer look into upcoming content.

[h2]Looking Back on inZOI's Development[/h2]
inZOI has been a completely new challenge for both me and the team. We've stepped into a genre that was unfamiliar to us and experimented with new approaches, getting this far through trial, error and collaboration. It's been a true learning experience, albeit one that's left plenty of room for improvement.

In addition to the upcoming hotfixes, we're working hard to prepare new content for the May and August updates. Though we've still got a long way to go, we hope to reward the trust and patience you've shown us.

To us, you're more than just players—you're partners who share our vision, walking this path together with us as one team. Your support and passion keep us going and give us a reason to push forward.

Of course, we're aware that the road ahead isn't an easy one. Nonetheless, we're committed to working on finishing the game, one step at a time.

To be honest, releasing inZOI left me with many complicated feelings. In many ways, putting a game out into the world feels a lot like becoming a parent.

Creating something new frees you from the world and its many expectations. You feel a true connection with what you've made, one so deep that it blurs the line between creator and creation. It's a truly profound experience.

Of course, that joy comes with its share of pain. As joyful as it is when the world embraces your creation, it hurts just as much when it doesn't. But perhaps that pain is simply just another part of being a creator. I'd even call it a pain worth having.

Regardless, we've only made it this far thanks to you. Thank you once again for supporting inZOI.

I'll be back soon to share more thoughts. In the meantime, please enjoy the game, and let us know what you think!

Thank you.
- Kjun